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v3.20.1

Segment information - Revenues earned by major geographic region and major customer (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |
Revenue | $ 68,793,651 | $ 65,719,857
Cayman Island [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 30,327,139 | 34,623,925
Bahamas [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 23,114,860 | 23,241,361
Indonesia [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 131 | 153,233
United States [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 14,968,868 | 7,256,150
Revenues earned from management services agreement with OC-BVI [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 382,653 | 445,188
Water and Sewerage Corporation [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 22,877,741 | $ 22,956,878
Percentage of consolidated revenues | 33.00% | 35.00%
Water Authority - Cayman [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 3,871,248 | $ 7,789,926
Percentage of consolidated revenues | 6.00% | 12.00%
One Customer [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 9,238,476 | $ 5,008,473
Percentage of consolidated revenues | 13.00% | 8.00%

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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